Technology · MediaTek
MediaTek MT6991 vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 16 vulnerabilities in MediaTek MT6991: 0 in the last 7 days and 15 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-20515, was published on 7 September 2026.
- Last 7 days
- 0
- Last 90 days
- 15
- Critical, all time
- 0
- Exploited in the wild
- 0
About MediaTek MT6991
A system-on-chip designed for use in mobile devices and smartphones.
Latest MediaTek MT6991 vulnerabilities
- CVE-2026-20515: MediaTek GPU use after free leading to system crashmediumCVSS 5.5EPSS 0.1%
- CVE-2026-20503: MediaTek Modem system crash due to missing bounds checkmediumCVSS 5.3EPSS 0.2%
- CVE-2026-20502: MediaTek vdec out of bounds writehighCVSS 8.4EPSS 0.1%
- CVE-2026-20501: MediaTek vdec heap buffer overflow privilege escalationhighCVSS 8.4EPSS 0.1%
- CVE-2026-20500: MediaTek Modem system crash due to improper input validationmediumCVSS 5.5EPSS 0.1%
- CVE-2026-20489: MediaTek display integer overflow information disclosuremediumCVSS 4.4EPSS 0.2%
- CVE-2026-20488: MediaTek display information disclosure via missing bounds checkmediumCVSS 4.4EPSS 0.2%
- CVE-2026-20486: MediaTek imgsensor application crash due to incorrect error handlingmediumCVSS 6.7EPSS 0.2%
- CVE-2026-20484: MediaTek TFA information disclosure due to missing permission checkmediumCVSS 4.4EPSS 0.2%
- CVE-2026-20483: MediaTek Telephony permission check bypasshighCVSS 7.7EPSS 0.2%
- CVE-2026-20477: MediaTek display out-of-bounds writemediumCVSS 6EPSS 0.2%
- CVE-2026-20475: MediaTek display out-of-bounds write privilege escalationmediumCVSS 6EPSS 0.2%
- CVE-2026-20474: MediaTek display driver privilege escalation via race conditionmediumCVSS 6EPSS 0.1%
- CVE-2026-20473: MediaTek display memory corruption use-after-freemediumCVSS 6EPSS 0.2%
- CVE-2026-20461: MediaTek Modem out-of-bounds write via rogue base stationinfo
- CVE-2026-20431: MediaTek Chipset denial of service in ModemmediumCVSS 6.5EPSS 0.3%
Most severe MediaTek MT6991 vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2026-20502: MediaTek vdec out of bounds writehighCVSS 8.4EPSS 0.1%
- CVE-2026-20501: MediaTek vdec heap buffer overflow privilege escalationhighCVSS 8.4EPSS 0.1%
- CVE-2026-20483: MediaTek Telephony permission check bypasshighCVSS 7.7EPSS 0.2%
- CVE-2026-20486: MediaTek imgsensor application crash due to incorrect error handlingmediumCVSS 6.7EPSS 0.2%
- CVE-2026-20431: MediaTek Chipset denial of service in ModemmediumCVSS 6.5EPSS 0.3%
- CVE-2026-20477: MediaTek display out-of-bounds writemediumCVSS 6EPSS 0.2%
- CVE-2026-20475: MediaTek display out-of-bounds write privilege escalationmediumCVSS 6EPSS 0.2%
- CVE-2026-20473: MediaTek display memory corruption use-after-freemediumCVSS 6EPSS 0.2%
- CVE-2026-20474: MediaTek display driver privilege escalation via race conditionmediumCVSS 6EPSS 0.1%
- CVE-2026-20515: MediaTek GPU use after free leading to system crashmediumCVSS 5.5EPSS 0.1%
Vulnerabilities per week
The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 29 Jun 2026 | 1 | 0 | |
| 6 Jul 2026 | 0 | 0 | |
| 13 Jul 2026 | 0 | 0 | |
| 20 Jul 2026 | 0 | 0 | |
| 27 Jul 2026 | 0 | 0 | |
| 3 Aug 2026 | 9 | 0 | |
| 10 Aug 2026 | 0 | 0 | |
| 17 Aug 2026 | 0 | 0 | |
| 24 Aug 2026 | 0 | 0 | |
| 31 Aug 2026 | 0 | 0 | |
| 7 Sep 2026 | 5 | 0 | |
| 14 Sep 2026 | 0 | 0 | |
| 21 Sep 2026 | 0 | 0 |
How this is built
Junglewise Threat Intelligence collects vulnerabilities from NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories, and matches each one to the technologies and vendors it affects. Dates are the date a vulnerability was published, in UTC.
The pages are rebuilt from the database every hour. Frozen weekly and monthly reports never change once published, so they can be cited.
Use this data
The same data is at https://junglewise.ai/threats/technologies/mt6991.json, for scripts and language models. It is free to reuse under CC BY 4.0 with a link back to this page.
Cite as: Junglewise Threat Intelligence, "MediaTek MT6991 vulnerabilities", https://junglewise.ai/threats/technologies/mt6991, 26 September 2026.